he bought a $16 million mansion in san francisco. he's got a multimillion dollar home in aspen. plus, he's got a lot of other wealth from facebook and other investments. but mark is now proof that sudden wealth can quickly become sudden wealth loss in social media. of course, the new .com guys learned something new, to take that wealth off the table before it goes up in smoke. back to you, michelle. >> yeah, exactly. thanks, robert. >>> we have about 20 minutes before the closing bell. the dow jones industrial average has now gone negative on the session. nasdaq's been there for about an hour. >> goldman sachs with a stunning market prediction. we'll tell you what it is and get the reaction next. don't go away. >>> apple shares rallying more than 70% since the death of steve jobs one year ago today. will that last, or will the magic drain out without jobs' vision? both sides of the debate coming up. for what's around this corner... and the next. there's cash flow options from pnc. solutions to help businesses like yours accelerate receivables, manage payments, and help ensure ac